docs: def convert_characteristicFaultSource(self, node):
          """
          Convert the given node into a characteristic fault object.
  
          :param node:
              a node with tag areaGeometry
          :returns:
              a :class:`openquake.hazardlib.source.CharacteristicFaultSource`
              instance
          """
          char = source.CharacteristicFaultSource(
              source_id=node['id'],
              name=node['name'],
              tectonic_region_type=node.attrib.get('tectonicRegion'),
              mfd=self.convert_mfdist(node),
              surface=self.convert_surfaces(node.surface),
              rake=~node.rake,
              temporal_occurrence_model=self.get_tom(node))
          return char